Pump



June 2, B HARSEL PUMP Filed Sept. 24, 1934 INVENTOR BY WILLIA B. HnRsELATTORNEY Patented June 2, 1936 UNITED STATE$ LMZJS I PATET GFFEE 8Claims.

This invention relates to pumps more particularly of the type in whichcentripetal action is availed of.

Among other objects, the invention aims to provide an improvedpump ofthis type in which acasing is revolved in a fluid and having passagestherethrough into: which the fluid: is directed by the rotative movementof the casing, the passages communicating with a common outlet ductthrough which the fluid is caused to flow by the centripetal actionreferred to.

An important object of the invention is to provide such a casing whichis rotatable in either direction, and a further object is to improve thedesignofthe casing to enhance the efiiciency of the pump while at thesame time maintaining it simple and economical instructure andoperation.

With these and other objects in View, the inventi'on comprises: certainnovel constructions,

combinations, and arrangements of parts hereinafter described andclaimed.

In the accompanying drawing, showing an illustrative embodiment of theinvention and form- +ing apart of the speciflcation Figure 1 is anelevational view of the illustrative construction with bearing meanstherefor shown partly in section;

Figure 2 is a plan view of the casing of Figure 1 partly'in section; and

Figure 3 is an el'evational View of the casing, similar to- Figure 1 butomitting the bearing means and'showing the casing partly in section.

Referring in detail to theillustrative constructiondepicted in thedrawing, I have shown a casing Ill adapted to-"be rotated in a liquid orother fluid, this casing iil comprising a generally flat impellerportion H which is usually arranged to be rotated in a horizontal planeby means of the upright central stem portion l2 which may advantageouslyprovide a journal for the im peller portion l I.

In accordance with my invention, the impeller portion is of polygonalform in the sense that its perimeter presents a plurality ofsubstantially straight sides and angles in the plane of rotation, forone purpose of offering greater resistance to rotation and therebycausing the fluid to be entrained therein under increased pressure. Boththe impeller portion l l of the casing and the stem portion [2, in thisinstance, are hollow, the impeller portion ll being desirably formed oftwo metallic plates [3, M of triangular configuration, these platesbeing maintained in fixed spacedapart relation by spacing rivets 15 towhich the plates are secured, these spacing rivets being advantageouslylocated substantially at the apexes of the angles. Suitably securedbetween the plates I3, [4 also are a plurality of partitions it whichjointly divide the interior of the hollow impeller portion ll of thecasing IE1 into a plurality, in this instance three, transverse passagesl1, l8 and I9. The passages ll, l8 and Hi may be caused to merge, asshown, at a common point such as at the rotative center of the impellerportion ll of the casing, where they all communicate with the hollowinterior of the journal or tubular stem l2.

Further in accordance with my invention, each of the passages I7, I 8and I9 has two openings through the perimeter of the casing, and eitherof these openings is arranged to be closed and the other opened by meansautomatically responsive to the pressure of the fluid, so that uponrotation of the casing in either direction, the opening facing in thedirection of rotation will be automatically opened and the other openingclosed, to direct the fluid into the passages.

In the present exempliflcation, I have shown such means in the form of aswinging deflector 2'0 pivoted to each of the rivets i5, and thus at theapex of each of the angles in the casing perimeter. The deflector may bea metallic blade of a vertical height to have snug but free movementbetween the plates 53, M and of sufiicient length to slightly lap one ofthe partition walls I6 in either of the extreme swinging positions ofthe deflector, the deflector being readily hinged to the cylindricalrivet l5 by having a portion 2| bent thereabout in cylindrical form toprovide a hinge knuckle.

In this instance, the partition walls l 6 are advantageously somewhatV-shaped, being in the form of plates having a vertical height equal tothe distance between the plates l3, l4 and being bent upon themselves sothat their apexes are directed towards each other but spaced apart inthe vicinity of the center of the casing. Each of these apexes isadvantageously slightly rounded and the V-shaped sides of the partitionsflare therefrom in concave curved walls 22, which terminate in somewhatinwardly directed ends 23 with which the deflectors may have closeabutment.

So constructed and arranged, when the casing I0 is rotated, for examplein the direction of the arrow shown in Figure 2, the pressure of theliquid or other fluid will swing the deflectors to the positions shownin full lines in Figure 2, to close the openings Ila, 18a, l9a into thepassages l1, l8 and is facing away from the direction of rotation and toopen the openings llb, I81), I91) facing in the direction of rotation.Thus the fluid is directed under pressure concurrently into each of thepassages l7, l8 and I9, and each of the streams prevents the otherstreams from passing outwardly through the passages, but rather, takingthe path of least resistance, the confluent streams meeting at thecenter of the casing will flow upwardlythrough the outlet duct 24provided by the hollow interior of the tubular stem [2.

As shown in Figure 1, the tubular stem I?! may have a transverse opening25 therein which com municates with an annular chamber 2%: in thebearing member 21, in which the stem I 2 is journalled. The fluid underpressure in the chamber 26 may be led off through the duct 28 to whichany suitable coupling may be connected as by the screw threads 29. beextended in a bracket portion 30 having the usual bolt apertures 3itherein by which the bearing 21, together with the casing l0, may besuitably supported in a fluid reservoir. I have indicated in generalthat the stem l2 may be retained in the bearing member 2! as by beingextended upwardly therebeyond and keyed to a gear or pulley 32 by whichthe stem and casing may be rotated.

It will readily be understood, that upon rotation of the casing in theopposite direction, the de-' flectors will swing to their oppositeposition and uncover the openings i 1a., 9811 and Na, while closing theopenings lib, I81) and l9b.

Obviously, the invention is not limited to the details of constructionhere shown for purposes of illustration, and such changes may be made asfall within the scope of the appended claims.

Having described my invention, I claim:

1. In a pump of the class described, the combination of a casing oftriangular form adapted for rotation in a fluid, a plurality of passagesthrough the casing, a common discharge duct communicating with thepassages, two openings for each passage through the perimeter of thecasing adjacent each angle of the triangle and on each side of the apexthereof, and a deflector pivoted at each apex and responsive to pressureof the fluid to close one of the openings for each passage and to openthe other whereby the casing may be rotated in either direction.

2. In a pump of the class described, the combination of a casing ofnon-circular form adapted for rotation in a fluid and having a perimeterpresenting a plurality of angles in the plane of rotation of the casing,a central discharge duct for the fluid from the casing, a plurality ofpassages in the casing communicating with said duct, each passage havinga plurality of openings in the perimeter adjacent each of the angles ofthe perimeter and upon opposite sides thereof,

The bearing member 21 may and a deflector swingable about the apex ofeach angle and responsive to the pressure of the fluid to close one ofthe openings for each passage and to open the other.

3. In a pump of the class described, the com- 5 bination of a casingadapted for rotation in a fluid and having a perimeter forming asubstantially straight-sided symmetrical polygonal figure, and aplurality of passages through the casing, each having two openings intothe perimeter, one 10 on each side of the apex of the angle formed bytwo contiguous casing sides, and means for selecsage whereby the casingmay be rotated in either direction and the fluid will be directed intosaid 15 passages through the other of the openings for each passage.

4. In apump of the class described, the combination of a rotatablecasing formed of two axially aligned parallel plates each having a 20perimeter of triangular form, walls spacing the plates apart and forminga plurality of passages through the casing, an opening in the perimeterbetween an adjacent pair of walls for each passage adjacent the apex ofeach of the angles of the tri- 25,. angle and facing in the direction ofrotation of the casing, and means for deflecting a fluid receivedthrough said opening toward the center of the casing.

5. In a pump of the class described; the combination of a rotatablecasing, a passage therethrough, a plurality of openings into saidpassage from the perimeter of the casing, and a hinged deflectorcontrolling said openings alternately to close one and open the otherresponsive to direc- 5 tion of rotation of the casing.

6. In a pump of the class described, the combination of a rotatablecasing having a perimeter of polygonal form, a plurality of passagesthrough the casing, two openings in the perimeter for each 40 passageone on each of two adjacent sides of the polygon, and means fordeflecting a fluid received through said opening toward the center ofthe casing.

7. In a pump of the class described, the com- 45 bination of a rotatablecasing formed of two centrally aligned parallel plates, cylindricalspacing rivets maintaining the walls in fixed spacedapart relation, aswinging deflector hinged on each rivet, walls carried between theplates de- 50 fining a plurality of passages through the casing, andentrances into each passage defined alternatively by a deflector and oneof two of said walls adjacent thereto.

8. The structure of claim '7 wherein the walls are of sheet metal bentto somewhat V-shape and having inwardly directed ends adjacent each ofsaid openings limiting the swinging movement of the deflectors withinthe casing.

WILLIAM B. I-IARSEL.

